Parameter-Optimized Load Frequency Active Disturbance Rejection Control of Power System Based on Sine Cosine Algorithm

Load Frequency Control (LFC) is important to guarantee the stable, safe and continuous operation of power systems. In this paper, A parameter optimized load frequency active disturbance rejection control strategy is proposed. First, a two-area interconnected power system, which consists of thermal, hydro, and gas power generation units is established. Second, the Linear Active Disturbance Rejection Controller (LADRC) is used for the LFC task. Third, The Sine Cosine Algorithm (SCA) is utilized to adaptively adjust parameters of the LADRC controllers. The performance of the proposed method has been evaluated using the integral of time multiplied absolute error (ITAE) cost function. Finally, a comparative experiment and analysis is carried out. The robustness of the proposed strategy is evaluated by adding the random load disturbances. Experiment results validate the superiority and effectiveness of the proposed method.